Wu Shuo learned that according to SoSoValue data, the total net outflow of Bitcoin spot ETFs was 64.8776 million US dollars yesterday (April 4th Eastern Time), and none of the twelve ETFs had a net inflow. The Bitcoin spot ETF with the highest daily net outflow yesterday was the Grayscale Bitcoin ETF GBTC, with a daily net outflow of $25.212 million. Currently, the total historical net outflow of GBTC has reached $22.621 billion.